Systems

 

 

Integrated electrical and low-voltage systems of all types—inside and outside a building—encompass the range of work that electrical contractors do. The articles in this section highlight different types of work, from security, fire and life safety, to traditional electrical power and distribution, to lighting, cabling and more. 

Design/build means different things to different people. Regardless, you should know that it places more responsibility on your shoulders as the electrical professional. It means you need to stay abreast of the codes that affect your installations.


Figure 1: Typical magnitude of voltage sag as percent of nominal compiled of EPRI DPQ Project in 1990s

A customer recently called me about the information on his power quality monitor screen. He said about a dozen different events were showing up, but the lights had just blinked once. He wanted to know what all of the other nonsense was supposed to tell him.

Last month, I wrote about how fiber was being used to expand bandwidth for cellular systems, connecting cell towers to the phone network and antennas on the tower to the base electronics. That helps our phone coverage when we’re driving or walking outside.

Workflow-management tools are designed to orchestrate everyday business processes. For example, a contractor may implement a process for submitting, reviewing and approving expense reports.

More on Systems

 
Cable Management Systems Organize Wires While Eliminating Sag and Snag
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The numerous choices for managing voice/data/video cabling (VDV) installations enable electrical contractors to effectively run well-supported wiring through almost any location and under any field condition.

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Get a Hold (Up) on Bank Security
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Financial institutions, bank branches, and a variety of other lending organizations generally have one thing in common—money. And, that money sometimes has to be protected from unscrupulous persons who might want to grab what’s not legally theirs.

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The Alphabet Soup of Fiber Optic Connectors
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One of the negative aspects of high tech is its habit of using abbreviations and acronyms for practically everything. It gets so bad, we joke about all the TLAs or three-letter acronyms.

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TIA Approves 10/100 Mbps Fiber Ethernet Solution
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“Better late than never” probably best describes the latest approved Local Area Network (LAN) standard—ANSI/TIA/EIA-785 100 Mbps Physical Layer Medium Dependent Sublayer and 10 Mbps and 100 Mbps Auto-Negotiation on 850nm Fiber Optics.

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A Year Makes a Difference
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“A EC Systems 2000”, which took place in June in Washington, D.C., was swamped with dot-coms aiming at the architecture, engineering, and construction (AEC) community. Among the exhibitors was supplyFORCE.com, a distributor enterprise that emanates from within the electrical industry.

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VDV Product Focus
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AC Drive

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Video Technology: At the Speed of Light
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Anything––and everything––is a possible subject of closed-circuit television (CCTV) surveillance.

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